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A251977 as a simple table

na(n)
19822
273222
3516108
42703512
516324414
6113817844
7782954632
85188534650
934257278876
10228560005812
111530119165804
1210223398679682
1368224593204516
14455452709926230
153041841356153024
1620315839299362970
17135671042971647764

[9822,73222,516108,2703512,16324414,113817844,
 782954632,5188534650,34257278876,228560005812,
 1530119165804,10223398679682,68224593204516,
 455452709926230,3041841356153024,
 20315839299362970,135671042971647764]